*{margin:0;padding:0;box-sizing:border-box}:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}html,body{margin:0;min-width:320px;height:100%;background-color:#f5f5f5;color:#333;overflow:hidden;-webkit-text-size-adjust:100%}#root{height:100%}.login-container{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px;padding-top:calc(20px + var(--safe-top, 0px));padding-bottom:calc(20px + var(--safe-bottom, 0px))}.login-box{background:#fff;border-radius:16px;padding:32px 24px;box-shadow:0 20px 60px #0000004d;max-width:400px;width:100%}.login-header{text-align:center;margin-bottom:24px}.login-header h1{margin:0 0 8px;font-size:26px;color:#333}.login-header p{margin:0;color:#666;font-size:13px}.login-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:14px;font-weight:600;color:#333}.password-input{padding:12px 16px;border:2px solid #e0e0e0;border-radius:8px;font-size:16px;transition:border-color .2s}.password-input:focus{outline:none;border-color:#667eea}.password-input:disabled{background-color:#f5f5f5;cursor:not-allowed}.error-message{background-color:#fee;color:#c00;padding:10px;border-radius:8px;font-size:13px;text-align:center}.login-button{padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,opacity .2s}.login-button:hover:not(:disabled){transform:translateY(-2px);opacity:.9}.login-button:active:not(:disabled){transform:translateY(0)}.login-button:disabled{opacity:.6;cursor:not-allowed}.login-footer{margin-top:20px;text-align:center}.info-text{font-size:12px;color:#666;margin:0;line-height:1.5}.call-buttons{display:flex;gap:6px}.call-btn{width:34px;height:34px;border:none;border-radius:50%;background-color:#fff3;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:background-color .2s,transform .2s}.call-btn:hover:not(:disabled){background-color:#ffffff59;transform:scale(1.1)}.call-btn:disabled{opacity:.4;cursor:not-allowed}.call-btn svg,.control-btn svg,.call-action-btn svg{flex-shrink:0}.call-error{position:fixed;top:calc(70px + var(--safe-top, 0px));left:50%;transform:translate(-50%);background-color:#f44336;color:#fff;padding:10px 24px;border-radius:24px;font-size:14px;font-weight:600;z-index:1001;box-shadow:0 4px 12px #0000004d;animation:slideDown .3s ease-out;white-space:nowrap}@keyframes slideDown{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.call-overlay{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.call-modal{background:#fff;border-radius:20px;padding:32px 24px;text-align:center;box-shadow:0 20px 60px #0006;max-width:340px;width:88%}.call-overlay:not(.active-call){background-color:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.call-avatar{margin-bottom:12px;display:flex;align-items:center;justify-content:center}.call-avatar.ringing{animation:ring 1s ease-in-out infinite}@keyframes ring{0%,to{transform:rotate(0)}20%{transform:rotate(15deg)}40%{transform:rotate(-15deg)}60%{transform:rotate(10deg)}80%{transform:rotate(-10deg)}}.call-modal h3{margin:0 0 8px;font-size:20px;color:#333}.call-modal p{margin:0 0 24px;color:#666;font-size:14px}.call-actions{display:flex;justify-content:center;gap:16px}.call-action-btn{padding:12px 24px;border:none;border-radius:30px;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s,opacity .2s;flex:1;max-width:160px;display:flex;align-items:center;justify-content:center;gap:6px}.call-action-btn:hover{transform:scale(1.05)}.call-action-btn:active{transform:scale(.98)}.accept-btn{background-color:#4caf50;color:#fff}.reject-btn{background-color:#f44336;color:#fff}.active-call.audio-call{background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);flex-direction:column}.active-call.video-call{background-color:#000;flex-direction:column}.audio-call-ui{text-align:center;color:#fff;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center}.audio-call-ui .active-avatar{margin-bottom:16px}.audio-call-ui h3{margin:0 0 8px;font-size:24px}.audio-call-ui p{margin:0;font-size:16px;opacity:.8}.video-container{flex:1;position:relative;width:100%;overflow:hidden}.remote-video{width:100%;height:100%;object-fit:cover}.local-video{position:absolute;bottom:16px;right:16px;width:120px;height:160px;border-radius:12px;object-fit:cover;border:2px solid rgba(255,255,255,.5);box-shadow:0 4px 12px #0000004d;z-index:5}.video-duration{position:absolute;top:calc(16px + var(--safe-top, 0px));left:50%;transform:translate(-50%);background-color:#00000080;color:#fff;padding:4px 14px;border-radius:16px;font-size:13px;font-weight:600;z-index:5}.call-controls{display:flex;justify-content:center;gap:16px;padding:20px 0;padding-bottom:calc(20px + var(--safe-bottom, 0px));flex-shrink:0}.control-btn{width:52px;height:52px;border:none;border-radius:50%;background-color:#ffffff26;cursor:pointer;font-size:22px;display:flex;align-items:center;justify-content:center;transition:background-color .2s,transform .2s}.control-btn:hover{background-color:#ffffff40;transform:scale(1.1)}.control-btn:active{transform:scale(.95)}.control-btn.active{background-color:#ffffff4d}.end-call-btn{background-color:#f44336!important;width:60px;height:60px;font-size:26px}.end-call-btn:hover{background-color:#d32f2f!important}@media(max-width:380px){.call-btn{width:30px;height:30px;font-size:14px}.call-buttons{gap:4px}.local-video{width:90px;height:120px;bottom:12px;right:12px}.control-btn{width:46px;height:46px;font-size:20px}.end-call-btn{width:54px;height:54px}.call-controls{gap:12px}}.chat-container{display:flex;flex-direction:column;height:100vh;height:100dvh;background-color:#f5f5f5}.chat-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:12px 16px;padding-top:calc(12px + var(--safe-top, 0px));display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 10px #0000001a;flex-shrink:0;gap:8px}.header-left{display:flex;align-items:center;gap:8px;min-width:0;flex-shrink:1}.user-badge{background-color:#fff3;padding:4px 10px;border-radius:10px;font-size:12px;font-weight:600;white-space:nowrap}.header-right{display:flex;align-items:center;gap:8px;flex-shrink:0}.status-indicator{font-size:11px;padding:4px 10px;border-radius:12px;background-color:#ffffff26;white-space:nowrap;display:flex;align-items:center;gap:5px}.status-dot{width:7px;height:7px;border-radius:50%;display:inline-block}.status-dot.online{background-color:#4caf50;box-shadow:0 0 6px #4caf5099}.status-dot.offline{background-color:#ef5350;box-shadow:0 0 6px #f4433666}.logout-button{background-color:#ffffff26;color:#fff;border:none;width:34px;height:34px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background-color .2s,transform .2s}.logout-button:hover{background-color:#ffffff4d;transform:scale(1.1)}.logout-button svg{flex-shrink:0}.messages-container{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px;-webkit-overflow-scrolling:touch}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#999;padding:20px}.empty-state p{margin:8px 0;font-size:16px}.empty-subtitle{font-size:13px!important;max-width:280px;text-align:center;line-height:1.5}.message{display:flex;margin-bottom:4px;animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.sent{justify-content:flex-end}.message.received{justify-content:flex-start}.message-content{max-width:75%;padding:10px 14px;border-radius:16px;box-shadow:0 1px 3px #0000001a}.message.sent .message-content{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-bottom-right-radius:4px}.message.received .message-content{background-color:#fff;color:#333;border-bottom-left-radius:4px}.message.pending .message-content{opacity:.6}.message-content p{margin:0 0 4px;word-wrap:break-word;overflow-wrap:break-word;line-height:1.4;font-size:15px}.message-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:2px}.message-meta small{font-size:10px;opacity:.8}.delivery-status{font-size:11px;display:inline-flex;align-items:center;gap:3px;opacity:.85;transition:all .3s ease}.delivery-status .status-text{font-size:10px;font-weight:500}.delivery-status.sent{opacity:.7}.delivery-status.delivered{opacity:.9}.delivery-status.seen{opacity:1;color:#53bdeb}.typing-indicator{display:flex;align-items:center;gap:8px;color:#666;font-size:13px;font-style:italic;padding:4px 12px}.dots{display:inline-flex;gap:2px}.dots span{animation:blink 1.4s infinite}.dots span:nth-child(2){animation-delay:.2s}.dots span:nth-child(3){animation-delay:.4s}@keyframes blink{0%,60%,to{opacity:1}30%{opacity:.3}}.message-input-container{padding:10px 12px;padding-bottom:calc(10px + var(--safe-bottom, 0px));background-color:#fff;border-top:1px solid #e0e0e0;display:flex;gap:8px;flex-shrink:0}.message-input{flex:1;padding:10px 14px;border:2px solid #e0e0e0;border-radius:24px;font-size:16px;transition:border-color .2s;min-width:0}.message-input:focus{outline:none;border-color:#667eea}.message-input:disabled{background-color:#f5f5f5;cursor:not-allowed}.send-button{width:42px;height:42px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:50%;cursor:pointer;transition:transform .2s,opacity .2s;flex-shrink:0;display:flex;align-items:center;justify-content:center}.send-button:hover:not(:disabled){transform:translateY(-2px);opacity:.9}.send-button:active:not(:disabled){transform:translateY(0)}.send-button:disabled{opacity:.5;cursor:not-allowed}.connection-status{position:fixed;bottom:calc(80px + var(--safe-bottom, 0px));left:50%;transform:translate(-50%);background-color:#ff9800;color:#fff;padding:10px 20px;border-radius:24px;box-shadow:0 4px 12px #0003;font-size:13px;font-weight:600;animation:pulse 2s infinite;z-index:100;white-space:nowrap}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@media(max-width:380px){.header-left h2{font-size:15px}.user-badge{display:none}.status-indicator{font-size:11px;padding:3px 6px}.logout-button{width:30px;height:30px}.logout-button svg{width:15px;height:15px}.message-content{max-width:85%}.send-button{width:38px;height:38px}}.app{height:100vh;height:100dvh;width:100%}.error-container{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.error-box{background:#fff;border-radius:16px;padding:32px 24px;box-shadow:0 20px 60px #0000004d;max-width:500px;width:100%;text-align:center}.error-box h1{margin:0 0 16px;color:#c00;font-size:22px}.error-box p{margin:10px 0;color:#666;line-height:1.6;font-size:14px}
